service engine light on 2003 s10

Asked by maiergary Jul 12, 2015 at 08:33 PM about the 2003 Chevrolet S-10 LS Crew Cab 4WD

Question type: Maintenance & Repair

the code for the service engine light that is on came up as; catalyst efficiency low on bank number one, what is the cure for this, I have been told everything from a fuel injector nozzle to a bad plug wire to replacing catalytic convertor. Help.

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